Charter Communications

(CHTR) - Get Charter Communications, Inc. Class A Report

was among the gainers Friday night in the Instinet extra session, adding 62 cents, or about 8%, to $8.33. The company, which fell 44 cents in the regular session, said in a release issued after the bell that it had hired

Concurrent Computer

(CCUR)

as a hardware provider in a planned video-on-demand launch in several markets this year.

Other gainers Friday night included

Genta

(GNTA)

, which had a ratings reiteration by Raymond James earlier. Shares were up 11% to $13. Meanwhile

Adelphia

(ADLAE)

tacked on about 5% to $6.30 after a week in which the troubled cable company was further battered after its debt rating was cut by

S&P

. Also climbing was

Transwitch

(TXCC)

, adding 1.7% to $1.80 a week after it was downgraded by Merrill.

Several biotech firms were feeling pressure to the downside after

Cellergy's

TheStreet Recommends

(CLGY)

steep fall during the regular session. That stock was down another 7% to $2.70 after giving up about 60% of its value on news it had pulled its application for a pain medication when it became clear the FDA would require added information. Also falling Friday night in thin trading was

Incyte Genomics

(INCY) - Get Incyte Corporation (INCY) Report

, off 26% to $6.01; and

Genaissance

(GNSC)

, down 4% to $2.23.

The volume leaders were the usual Instinet suspects on a Friday afternoon with

WorldCom

(WCOM)

unchanged at $3.27;

Microsoft

(MSFT) - Get Microsoft Corporation (MSFT) Report

down a penny to $51.40;

ADC Telecommunications

(ADCT) - Get ADC Therapeutics SA Report

, down 3 cents to $3.57 and

Intel

(INTC) - Get Intel Corporation (INTC) Report

, down 7 cents to $28.05.